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Add r.resamp.filter.txt algorithm

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Médéric RIBREUX
Médéric RIBREUX committed Feb 20, 2016
1 parent 322d9e6 commit 777de063cc745b527831a4978a6f79c475512987
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r.resamp.filter
Resamples raster map layers using an analytic kernel.
Raster (r.*)
ParameterRaster|input|Input raster layer|False
ParameterString|filter|Filter kernel(s) (comma separated list if multiple). Options: box, bartlett, gauss, normal, hermite, sinc, lanczos1, lanczos2, lanczos3, hann, hamming, blackman|None|False
ParameterString|radius|Filter radius for each filter (comma separated list of float if multiple)|None|False|True
ParameterString|x_radius|Filter radius (horizontal) for each filter (comma separated list of float if multiple)|None|False|True
ParameterString|y_radius|Filter radius (vertical) for each filter (comma separated list of float if multiple)|None|False|True
*ParameterBoolean|-n|Propagate NULLs|False|True
OutputRaster|output|Resampled Filter
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# -*- coding: utf-8 -*-

"""
***************************************************************************
r_resamp_filter.py
------------------
Date : February 2016
Copyright : (C) 2016 by Médéric Ribreux
Email : medspx at medspx dot fr
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""

__author__ = 'Médéric Ribreux'
__date__ = 'February 2016'
__copyright__ = '(C) 2016, Médéric Ribreux'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'


def checkParameterValuesBeforeExecuting(alg):
""" Verify if we have the right parameters """
radius = alg.getParameterValue(u'radius')
x_radius = alg.getParameterValue(u'x_radius')
y_radius = alg.getParameterValue(u'y_radius')

if (not radius and not x_radius and not y_radius) or (radius and (x_radius or y_radius)):
return alg.tr("You need to set either radius or x_radius and y_radius !")
elif (x_radius and not y_radius) or (y_radius and not x_radius):
return alg.tr("You need to set x_radius and y_radius !")
return None

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